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66 lines
1.8 KiB
66 lines
1.8 KiB
C Copyright(C) 1999-2020 National Technology & Engineering Solutions
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C of Sandia, LLC (NTESS). Under the terms of Contract DE-NA0003525 with
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C NTESS, the U.S. Government retains certain rights in this software.
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C
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C See packages/seacas/LICENSE for details
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SUBROUTINE APALIB (MXND, XN, YN, LXK, NXL, K, NODES, AREA, XCEN,
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& YCEN, KNUM, KLIB, NLIB, ALIB, XCLIB, YCLIB)
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C***********************************************************************
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C SUBROUTINE APALIB = LIBRARY OF ELEMENT DATA USED TO AVOID DUPLICATE
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C COMPUTATIONS
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C***********************************************************************
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DIMENSION NODES (4), KLIB (8), NLIB (4, 8)
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DIMENSION ALIB (8), XCLIB (8), YCLIB (8)
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DIMENSION XN (MXND), YN (MXND), LXK (4, MXND), NXL (2, 3 * MXND)
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LOGICAL CCW
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C SEARCH LIBRARY
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IF (KNUM .GT. 0) THEN
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DO 110 I = 1, KNUM
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IF (K - KLIB (I) .EQ. 0) THEN
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C FETCH FROM LIBRARY
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IK = I
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DO 100 J = 1, 4
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NODES (J) = NLIB (J, IK)
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100 CONTINUE
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AREA = ALIB (IK)
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XCEN = XCLIB (IK)
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YCEN = YCLIB (IK)
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RETURN
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ENDIF
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110 CONTINUE
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ENDIF
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C COMPUTE NEW DATA
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CCW = .TRUE.
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CALL GNXKA (MXND, XN, YN, K, NODES, AREA, LXK, NXL, CCW)
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N1 = NODES (1)
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N2 = NODES (2)
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N3 = NODES (3)
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N4 = NODES (4)
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XCEN = (XN (N1) + XN (N2) + XN (N3) + XN (N4)) * 0.25
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YCEN = (YN (N1) + YN (N2) + YN (N3) + YN (N4)) * 0.25
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IF (KNUM .GE. 8) RETURN
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C FILE NEW DATA IN LIBRARY
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KNUM = KNUM + 1
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DO 120 I = 1, 4
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NLIB (I, KNUM) = NODES (I)
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120 CONTINUE
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KLIB (KNUM) = K
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ALIB (KNUM) = AREA
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XCLIB (KNUM) = XCEN
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YCLIB (KNUM) = YCEN
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RETURN
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END
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